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For some reason ping on a WAN address returns 100% packet loss when executed with `-c 1`, but with `-c 2`, there is 0% packet loss. This appears to be consistent across multiple networks and machines, but hosts on the local LAN do not appear to be affected. Ping count=1 to google: # ping -c 1 www.google.com PING www.google.com (2607:f8b0:400b:802::2004) 56 data bytes --- www.google.com ping statistics --- 1 packets transmitted, 0 received, 100% packet loss, time 0ms Now ping with count=2 # ping -c 2 www.google.com PING www.google.com (2607:f8b0:400b:802::2004) 56 data bytes 64 bytes from yyz12s06-in-x04.1e100.net (2607:f8b0:400b:802::2004): icmp_seq=1 ttl=119 time=16.3 ms 64 bytes from yyz12s06-in-x04.1e100.net (2607:f8b0:400b:802::2004): icmp_seq=2 ttl=119 time=13.3 ms --- www.google.com ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 13.326/14.788/16.250/1.462 ms Ping with count=1 again to check if we have any sorts of arp or DNS lookup races or something like that: # ping -c 1 www.google.com PING www.google.com (2607:f8b0:400b:802::2004) 56 data bytes --- www.google.com ping statistics --- 1 packets transmitted, 0 received, 100% packet loss, time 0ms Ping with count=1 using IP address: # ping -c 1 2607:f8b0:400b:802::2004 PING 2607:f8b0:400b:802::2004 (2607:f8b0:400b:802::2004) 56 data bytes --- 2607:f8b0:400b:802::2004 ping statistics --- 1 packets transmitted, 0 received, 100% packet loss, time 0ms Ping with count=1 using IPv4 address: # ping -c 1 142.251.33.164 PING 142.251.33.164 (142.251.33.164) 56(84) bytes of data. --- 142.251.33.164 ping statistics --- 1 packets transmitted, 0 received, 100% packet loss, time 0ms Ping with count=2 using IPv4 address: # ping -c 2 142.251.33.164 PING 142.251.33.164 (142.251.33.164) 56(84) bytes of data. 64 bytes from 142.251.33.164: icmp_seq=1 ttl=119 time=12.1 ms 64 bytes from 142.251.33.164: icmp_seq=2 ttl=119 time=11.5 ms --- 142.251.33.164 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 11.493/11.771/12.050/0.278 ms Reproducible: Always Actual Results: I expect ping with a count of 1 packet to work Expected Results: Ping with a count of 1 packet does not work, but 2 packets does. Additional Information: fping works correctly in the same situation: # fping -c 1 www.google.com www.google.com : [0], 64 bytes, 21.8 ms (21.8 avg, 0% loss) www.google.com : xmt/rcv/%loss = 1/1/0%, min/avg/max = 21.8/21.8/21.8
This is already being tracked in 2384212 lets continue there. *** This bug has been marked as a duplicate of bug 2384212 ***